Concept:The pre-colonial political structure of the Ijaw people was based on kinship and descent.
Explanation:The Ijaw people of pre-colonial Nigeria were organized into clans.
A clan is a group of people united by actual or perceived kinship and common ancestry.
Each Ijaw clan was made up of several villages and communities that shared this ancestry.
The clan served as the basic unit of political, social, and economic organization among the Ijaw.
This structure helped them resolve disputes and maintain order without a centralized ruler.
It was different from age-grade systems, territorial federations, or centralized chiefdoms.
Answer:B. Clans